Your on the right track. I have moved motors foward 1.5 inches,still fly good. If i were real good flyer it might matter,but for me its fine. Weight is everything to 3d planes. Since i still build heavy,i try not to,but tend to anyways i now move servos forward,dont take much tailweight to bal if needed. Or,if needed build the front mount longer,not as bad as adding weight. I fought my 25 mojo built by someone else much tailheavy,rebuilt nose longer ,it now flys fine. Trim,that is every thing is right makes a good plane that flys nice. A cj plane has much forgiveness built in,3d planes dont forgive shit. Even my 202 got a bit of twist in its body,i can see it roll out every time because of it. Two years ago i did not know, Now i understand how important a light,straight plane is,and good servos. Thats what 3d does,it makes us aware of shortcomings and to try to be better,not just flying round and round a heavy badly setup turd. I was a cj,now i know better. Just me,having fun at myself.